Efficient use of partially overlapped channels in 2.4 GHz WLAN backhaul links

S. Abbasi, Quratulain Kalhoro, M. A. Kalhoro
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引用次数: 8

Abstract

In 2.4 GHz WLANs, channel assignment is critical issue due to minimum availability of orthogonal channels (1, 6 and 11). WLANs which supports Multiple Access Points (APs), either require maximum number of orthogonal channels for individual links to reduce channel interference or some new strategies adopt to improve the utilization of orthogonal channels. This paper is deeming to find an efficient way to utilize the partially overlapped channels of 2.4 GHz band as the orthogonal channels for WLAN backhaul links, which has achieved high throughput due to minimum interference between static links of backhaul with directional antennas. In proposed work an equation is derived to find sets of orthogonal channels of 2.4 GHz band, directed graph applied on sets of orthogonal channels in two-step approach (direct links and directional links) of each node. This study has produced throughput results approximately double as compared to traditional channel assignment with utilization of Partially Overlapped Channels (POS). Future lines of this work would be to analyze proposed channel assignment over backhaul using 5 GHz band to reduce adjacent channel interference, same concept can be useful to increase the system performance with MIMO and wireless mesh networks.
2.4 GHz WLAN回程链路部分重叠信道的有效利用
在2.4 GHz无线局域网中,由于正交信道(1,6和11)的最小可用性,信道分配是关键问题。支持多接入点(ap)的无线局域网,要么要求单个链路的正交信道数量最大化,以减少信道干扰,要么采用一些新的策略来提高正交信道的利用率。本文试图找到一种有效的方法,利用2.4 GHz频段部分重叠的信道作为WLAN回程链路的正交信道,使带定向天线的回程静态链路之间的干扰最小,从而实现高吞吐量。本文推导了求解2.4 GHz频段正交信道集的方程,并将有向图应用于各节点的正交信道集上,采用两步法(直接链路和定向链路)。与利用部分重叠信道(POS)的传统信道分配相比,本研究产生的吞吐量结果大约是传统信道分配的两倍。这项工作的未来路线将是分析使用5ghz频段回程的拟议信道分配,以减少相邻信道干扰,同样的概念可以用于提高MIMO和无线网状网络的系统性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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